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China best Electric Motors Sleeve Bearings Nu322em /Nu218e /Nu319em /Nu230e 85X151X34mm Cylindrical Roller Bearing deep groove ball bearing

Product Description

 

Electric Motors Sleeve Bearings NU322EM /NU218E /NU319EM /NU230E 85X151X34mm Cylindrical Roller Bearing

Product Description

The rolling elements are radial rolling bearings with cylindrical rollers. The internal structure of the cylindrical roller bearing adopts rollers arranged in parallel, and spacers or spacers are installed between the rollers, which can prevent the rollers from tilting or friction between the rollers, and effectively prevent the increase of the rotational torque.

According to whether the ring has ribs, it can be divided into single-row cylindrical roller bearings such as NU, NJ, NUP, N, NF, and double-row cylindrical roller bearings such as NNU and NN. The bearing has a detachable inner ring and outer ring.

Features
1. The rollers and the raceway are in line contact or trimmed line contact, with large radial bearing capacity, suitable for bearing heavy loads and impact loads.
2. The friction coefficient is small, suitable for high speed, and the limit speed is close to that of deep groove ball bearings.
3. N-type and NU-type can move axially, can adapt to changes in the relative position of the shaft and the shell caused by thermal expansion or installation errors, and can be used as free-end supports.
4. The processing requirements for the shaft or seat hole are relatively high. After the bearing is installed, the relative deviation of the axis of the outer ring must be strictly controlled to avoid contact stress concentration.
5. The inner or outer ring can be separated for easy installation and removal

Application:
Large and medium-sized electric motors, rolling stock, machine tool spindles, internal combustion engines, generators, gas turbines, gearboxes, rolling mills, vibrating screens, lifting and transporting machinery, etc.

Product Parameters

 

Type

Cylindrical Roller Bearing

Structure

Cylindrical Roller Bearing

Applicable Industries

Machinery repair shop, manufacturing plant, automobile manufacturing, agricultural machinery

Size

30mm-800mm

Accuracy Grade

P0 P6 P5 P4

Seal Type

Open

Retainer Type

Copper / Nylon / Steel

Origin

ZheJiang , China

Brand Name

HOTE BEARING

Service

OEM / ODM or customer logo is acceptable

 

Cylindrical Roller Bearing
NU106M NU202M N304E NJ4050
NU1007M NJ202M NU304 N4050
NJ1007M N203E NJ304E N407M
N1008M NU203E N305 N408M
NU1008M NJ203E NF305 N409M
NJ1008M NJ203E NU305 NJ410
NU1009M N204E NJ305 NU414M
NU1571M NU204E N306 NJ414M
NJ1571M NJ204E NU306E N416M
NU1011M N205E NJ306E N417M
NJ1011M NF205 N307 NU417M
NU1012M NU205E NF307EVNU307 NJ417M
NJ1012M NJ208E NU307M NU418M
NU1013M NCL205V NJ307M N2310EM
NJ1013M N2066E N308EM NU2310E
N1014M NF206E NF308EM NJ2310E
NU1014M NU206E NU308EM NU2311
NJ1014M NJ206E NJ308EM NJ2311
NU1015M NCL206V N309E N2312E
NJ1015M N207 NF309E NU2312E
NU1016M NF207E NU309E NJ2312E
NJ1016M NU207 NJ309E NJ2314E
NU1017M NJ207 N310E N2315EM
NJ1017M N208 N310EM NU2315E
NU1018M NJ208E NF310E NJ2315E
NJ1018M N209E NU310E N2316EM
NU1019M NF208E NJ310E NU2316E
NJ1019M NU209E N311E NJ2316E
NU1571M NJ209E NU311E NU2317E
NJ1571M N210E NJ311E NJ2317E
NJ1571M NF210E NJ311E N2318EM
NU1571M NU210E N312E NU2318E
NJ1571M N211E NF312E NJ2318E
NU1026M NF211E NU312E NU2319E
NJ1026M NU211E NJ312E NJ2319E
NU1571M NJ211E N313E N2320EM
NJ1571M N212 NF313E N2322EM
NU1030M NU212 NU313E NU2322EM
NJ1030M NJ212E NJ313E NJ2322EM
NU1032M N213E NUP313ENV  
NJ1032M NU213E N314E  
NU1034M NJ213E NF314E  
NU10136EM N214E NU314EM  
NJ1036EM NF214E NJ314E  
NJ1038M NU214E N315E  
NJ1038M NJ214E NU315E  
NU1040M N215E NJ315E  
NJ1040M NF215E N316E  
NU1052M NU215E NU316E  
NJ1052M NJ215E NJ316E  
  N216 N317E  
  NU216 NU317E  
  NJ216 NJ317E  
  N217E N318E  
  NU217E NU318E  
  NJ217E NJ318E  
  N218E N319E319EM  
  NU218E NU319EM  
  NJ218E NJ319EM  
  N219 N320EM  
  NU219 NU320EM  
  NJ219 NJ320EM  
  N220E NU321EM  
  NU222E NJ321EM  
  NJ220E NJ321E  
  N222EMK N322E  
  NJ222E NU322EM  
  N224E NJ322E  
  NJ224E N324E  
  N226E NU324E  
  NF226EM NJ324E  
  NU226E N326EM  
  NJ226E NU326EM  
  NU228E NJ326EM  
  NU228E N328EM  
  NJ228E NU328EM  
  N230EM NJ328EM  
  NU230E N332EM  
  NJ230E NU332EM  
  N232E NJ332EM  
  NU232E N334EM  
  NJ232E NU334EM  
  N234E NJ334EM  
  NU234E N336EM  
  NJ234E NU336EM  
  N236E NJ336EM  
  NU236E N344EM  
  NJ236E NU344EM  
  N238E NJ344EM  
  NU238E    
  NJ238E    
  N240EM    
  NJ240EM    
  N244EM    
  NU244EM    
  NJ244EM    

 

Detailed Photos

 

FAQ

Q1:What is your Before-sales Service?
1>. Offer to bear related consultation about technology and application;

2>.Help customers with bearing choice, clearance configuration, products” life, and reliability analysis;

3>. Offer highly cost-effective and complete solution program according to site conditions;

4>. Offer localized program on introduced equipment to save running cost

Q2: What is your After-sales Service?
1>. Offer training about bearing installation and maintenance;

2>.Help customers with trouble diagnosis and failure analysis;

3>. Visit customers regularly and feedback on their rational suggestions and requirements to the company.

Q3: How about your company’s strength?
1>.FREE SAMPLES:
contact us by email or trade manager, we will send the free samples according to your request. 

2>. World-Class Bearing:
We provide our customers with all types of indigenous roller bearings of world-class quality.

3>.OEM or Non-Stand Bearings: 
Any requirement for Non-standard roller bearings is Easily Fulfilled by us due to our vast knowledge and links in the industry. 

4>.Genuine products With Excellent Quality: 
The company has always proved the 100% quality products it provides with genuine intent.

5>. After-Sales Service and Technical Assistance: 
The company provides after-sales service and technical assistance as per the customer’s requirements and needs.

6>.Quick Delivery: 
The company provides just-in-time delivery with its streamlined supply chain.

7>.Cost Saving: 
We provide long-life, shock-resistant, and high-reliability roller bearings with excellent quality and better performance.
Resulting in increased cost savings.

Q4: What will we do if you are not satisfied with the product?
A: If have any abnormal, Please contact us at the first time, and we will immediately process

Q5: How long will you respond to our problems?
A: We will respond within 1 hour. 24 hours to solve your problem

Q6: Is optional lubrication provided?
A: We can offer a wide range of oils and greases for a variety of applications. Please contact our engineer for technical
assistance with any special requirements

 

Rolling Body: Ball Bearings
The Number of Rows: Multi-column
Outer Dimension: Small (28-55mm)
Samples:
US$ 10/Piece
1 Piece(Min.Order)

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Order Sample

Customization:
Available

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Customized Request

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Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

nylon sleeve bearing

Are there specific considerations for choosing nylon sleeve bearings in applications with high-speed or heavy load requirements?

Yes, there are specific considerations to keep in mind when choosing nylon sleeve bearings for applications with high-speed or heavy load requirements. Here’s a detailed explanation of these considerations:

  • High-Speed Applications:

When selecting nylon sleeve bearings for high-speed applications, several factors need to be considered:

  • Material Selection:

Choose a nylon material with low friction properties to minimize heat generation and reduce the risk of excessive wear at high speeds. Reinforced nylon or specialty formulations designed for high-speed applications are often preferred. These materials offer improved mechanical properties and can handle the demands of high-speed rotation while maintaining their structural integrity.

  • Lubrication:

Ensure that the nylon sleeve bearings are properly lubricated to reduce friction and dissipate heat. Consider self-lubricating nylon bearings that incorporate solid lubricants or additives within the material. These bearings provide continuous lubrication during operation, reducing the need for external lubrication and ensuring smooth performance at high speeds.

  • Cage Design:

Pay attention to the cage design of the nylon sleeve bearings. Opt for a cage design that promotes even distribution of the rolling elements and minimizes vibration and unwanted movement. A well-designed cage enhances stability and reduces the risk of issues caused by high-speed rotation, such as ball skidding or roller skewing.

  • Heavy Load Applications:

When considering nylon sleeve bearings for heavy load applications, the following factors should be taken into account:

  • Load Capacity:

Verify that the nylon sleeve bearings have the necessary load capacity to support the anticipated loads. Nylon bearings are available in different sizes and configurations, each with its own load-carrying capabilities. Consider the expected radial and axial loads and choose bearings that can withstand these forces without excessive deformation or premature failure.

  • Material Strength:

Select a nylon material with high mechanical strength and rigidity to handle heavy loads. Reinforced nylon or specialty formulations with enhanced strength properties are commonly used in heavy load applications. These materials provide the necessary structural integrity and resistance to deformation under significant loads.

  • Lubrication and Wear:

Ensure proper lubrication to reduce friction and wear between the bearing surfaces. Heavy loads can generate higher levels of heat and stress, increasing the risk of wear and premature failure. Consider self-lubricating nylon bearings or implement a lubrication regimen that adequately addresses the demands of the heavy load conditions.

It is important to note that while nylon sleeve bearings can handle high-speed or heavy load applications, there may be practical limits to their performance. In cases of extremely high speeds or exceptionally heavy loads, alternative bearing materials or designs, such as ball or roller bearings, may be more suitable.

In summary, when choosing nylon sleeve bearings for high-speed or heavy load applications, consider factors such as material selection, lubrication, cage design, load capacity, material strength, and wear prevention. By carefully evaluating these considerations, you can ensure that the nylon sleeve bearings meet the specific demands of the application, providing reliable performance and extended service life.

nylon sleeve bearing

What are the potential challenges or limitations of using nylon sleeve bearings in specific industries?

When considering the use of nylon sleeve bearings in specific industries, there are several potential challenges or limitations to be aware of. Here’s a detailed explanation of the challenges and limitations associated with using nylon sleeve bearings in specific industries:

  • High Load and Impact Applications:

Nylon sleeve bearings may have limitations when it comes to high load and impact applications. While nylon has good strength and load-bearing capabilities, it may not be suitable for extremely heavy loads or applications with frequent impacts. Excessive loads or impacts can cause deformation, accelerated wear, or even failure of the nylon material. In such cases, alternative bearing materials with higher load and impact resistance, such as bronze or steel, may be more appropriate.

  • Elevated Temperatures:

Nylon sleeve bearings have temperature limitations, particularly when it comes to elevated temperatures. Nylon begins to soften and lose its mechanical properties at higher temperatures. Prolonged exposure to temperatures above its recommended operating range can result in deformation, reduced load capacity, and compromised performance of the bearings. In industries where high temperatures are common, such as automotive or industrial applications, alternative bearing materials capable of withstanding higher temperatures, such as specialized polymers or self-lubricating metals, may be more suitable.

  • Chemical Exposure:

While nylon sleeve bearings offer good resistance to certain chemicals, they may not be suitable for all types of chemical exposures. Nylon can be adversely affected by strong acids, strong bases, and certain solvents. In industries where extensive exposure to corrosive or chemically aggressive environments is expected, alternative bearing materials specifically designed for chemical resistance, such as PTFE (polytetrafluoroethylene) or stainless steel, may be more appropriate.

  • Hydrolysis:

Nylon is susceptible to hydrolysis, a chemical reaction that occurs when nylon comes into contact with water or high humidity over extended periods. Hydrolysis can lead to a decrease in mechanical properties, dimensional changes, and overall degradation of the nylon material. In industries where prolonged exposure to moisture or high humidity is expected, alternative bearing materials with better resistance to hydrolysis, such as acetal or PEEK (polyether ether ketone), may be more suitable.

  • Speed Limitations:

Nylon sleeve bearings have speed limitations due to factors such as heat generation and potential for material deformation at higher speeds. In high-speed applications, the centrifugal forces and generated heat can cause the nylon material to soften or warp, leading to reduced bearing performance and potential failure. If high-speed operation is a requirement, alternative bearing materials designed for high-speed applications, such as specialized self-lubricating metals or ceramic hybrids, may be more suitable.

In summary, while nylon sleeve bearings offer numerous advantages, they also have potential challenges and limitations in specific industries. Factors such as high loads, impacts, elevated temperatures, chemical exposure, hydrolysis, and speed limitations can affect the performance and suitability of nylon bearings. It is important to carefully assess the application requirements, operating conditions, and potential limitations of nylon sleeve bearings and consider alternative bearing materials when necessary to ensure optimal performance and longevity in specific industries.

nylon sleeve bearing

How do nylon sleeve bearings compare to other types of sleeve bearings, such as bronze?

When comparing nylon sleeve bearings to other types of sleeve bearings, such as bronze, there are several factors to consider. Here’s a detailed comparison between nylon sleeve bearings and bronze sleeve bearings:

  • Friction and Lubrication:

Nylon sleeve bearings have inherent low-friction properties, which reduce the need for additional lubrication. They offer self-lubrication capabilities, allowing them to operate with minimal or no external lubrication. On the other hand, bronze sleeve bearings typically require regular lubrication to minimize friction and wear. Lubrication is necessary to create a lubricating film between the bearing and the mating surface, reducing friction and preventing metal-to-metal contact.

  • Wear Resistance:

Both nylon and bronze sleeve bearings offer good wear resistance. Nylon bearings can withstand continuous sliding motion against mating surfaces without significant wear or damage. Bronze bearings, especially those made from materials like phosphor bronze or aluminum bronze, are also known for their excellent wear resistance. However, the specific wear characteristics may depend on the application requirements, load conditions, and environmental factors.

  • Corrosion Resistance:

In terms of corrosion resistance, nylon sleeve bearings have an advantage over bronze bearings. Nylon is highly resistant to corrosion and does not rust or corrode when exposed to moisture or most common chemicals. Bronze bearings, although generally resistant to corrosion, can be susceptible to oxidation or chemical attack in certain environments. Bronze bearings may require additional protective coatings or maintenance to prevent corrosion-related issues.

  • Load Capacity:

Bronze sleeve bearings typically have higher load-carrying capacities compared to nylon sleeve bearings. Bronze, being a metal alloy, offers greater strength and hardness, allowing it to withstand heavier loads and higher pressures. Bronze bearings are commonly used in applications that involve significant loads or impact forces. Nylon bearings, while suitable for many moderate-load applications, may not be as appropriate for extremely heavy load conditions.

  • Temperature Range:

Bronze bearings generally have a wider temperature range compared to nylon bearings. Bronze can withstand higher temperatures without significant loss of mechanical properties. It is commonly used in high-temperature applications where nylon may not be suitable due to its lower melting point. Nylon sleeve bearings have a temperature limit, beyond which the material can deform or degrade. They are typically used in applications with lower temperature requirements.

  • Noise and Vibration:

Nylon sleeve bearings offer inherent noise reduction capabilities due to their low-friction operation. They can help dampen vibrations and reduce noise levels, contributing to quieter machinery and equipment. Bronze bearings, depending on their design and lubrication, can generate more noise and vibrations during operation. Additional measures, such as proper lubrication and vibration dampening arrangements, may be required to minimize noise and vibration in bronze bearing applications.

  • Cost:

In terms of cost, nylon sleeve bearings are generally more cost-effective compared to bronze bearings. Nylon is a readily available and cost-efficient material, making the manufacturing of nylon bearings economical. Bronze bearings, especially those made from high-performance alloys, can be more expensive due to the cost of raw materials and the manufacturing process. The cost difference may vary depending on the specific application requirements and the availability of materials.

In summary, nylon sleeve bearings and bronze sleeve bearings have distinct characteristics and advantages. Nylon bearings offer low friction and self-lubrication properties, corrosion resistance, and cost-effectiveness. They are suitable for moderate-load applications and environments where corrosion is a concern. Bronze bearings provide higher load capacities, wider temperature ranges, and are commonly used in heavy-load applications. The choice between nylon and bronze depends on the specific application requirements, load conditions, temperature range, and other factors.

China best Electric Motors Sleeve Bearings Nu322em /Nu218e /Nu319em /Nu230e 85X151X34mm Cylindrical Roller Bearing   deep groove ball bearingChina best Electric Motors Sleeve Bearings Nu322em /Nu218e /Nu319em /Nu230e 85X151X34mm Cylindrical Roller Bearing   deep groove ball bearing
editor by CX 2023-11-13